I'm sorry this isn't working on your iPhone 8 dpgleason. We understand the concern with making sure you block unwanted content. Were you able to forward the suspected spam text message to short code 7726 (SPAM)? Here is a link with steps to block internet spam, email, websites, and text https://www.verizonwireless.com/support/block-unblock-services-faqs/#block-internet .
Let me know if this information is helpful.